PART NO.  SPL.PAGE  DESCRIPTION                                                            
52K2236   15.A.16   Stud - carburetor to induction manifold (4) - (exhaust and inlet, 1500)
53K2236   16.A.15   Stud -carburetor to manifold (4) -(engine unit 1600)

This threaded stud is used to attach the carburetors and heat shield parts) to the intake manifold on the MG 1500.

Length: 2"
Top end thread: 3/8-24-UNF x 3/4"
Bottom end thread: 3/8-16-UNC x 3/4"

Alternate part numbers: 329-800 ( Moss Motors USA).

NOTICE: The part numbers for this stud are different in the 1500 and 1600 Service parts lists (52K vs. 53K). These may be identical parts in the real world, until proven otherwise. I do not know if it is a part number error, or if there really are two different part numbers for the same part. The 52K number seems to be more common among suppliers, while the 53K number is more rare (like maybe it shouldn't exist).